Ronini makes glass baby bottles in two styles. The Wrapped Glass Bottle is borosilicate glass with food-grade silicone molded onto it, thicker at the base, in Ronini orange. It's soft to hold, absorbs most drops, and contains the glass if it does break. The Glass Bottle is plain borosilicate glass, and it's the one we suggest for warming.
Both come in 5 oz (160 ml) and 8 oz (240 ml) 2-packs with the same four nipple flows: Drop, Sip, Stream and Rapid. Everything that touches the milk is glass or food-grade silicone, and the independent lab report is on our safety page. Want both? The Duo is one 2-pack of each.